@inproceedings{27108f51-206c-4e6e-8f0c-693b00aa6a38,
abstract = {All service control nodes, for example SCPs, HLRs, and MSCs, are constructed as a server system<br/><br>
with one or more servers that process incoming requests. Since service control nodes are sensitive to<br/><br>
overload, admission control mechanisms are often implemented. In this paper, we model and analyse<br/><br>
admission control mechanisms for server systems with control theoretic methods. We develop a nonlinear<br/><br>
stochastic control theoretic model of a GI/G/1-system. Further, we show that this model can be<br/><br>
used to design admission control mechanisms that behave well in the “real” system, that is the queuing<br/><br>
system. We develop two types of controllers for the system, one PI-controller and one RST-controller,<br/><br>
both commonly used in automatic control. Also, we discuss some of the limitations of previous work in<br/><br>
this area, in which only deterministic and linear models have been used.},
author = {Kihl, Maria and Robertsson, Anders and Wittenmark, Björn},
booktitle = {Providing quality of service in heterogeneous environments : proceedings of the 18th International Teletraffic Congress, ITC-18, Berlin, Germany, 31 August - 5 September 2003 (Teletraffic science and engineering ; vol. 5)},
editor = {Charzinski, J. and Lehnert, R. and Tran-Gia, P.},
isbn = {0-444-51455-4},
language = {eng},
pages = {1151--1160},
publisher = {Elsevier},
title = {Performance Modelling and Control of Server Systems using Non-linear Control Theory},
volume = {5A-B},
year = {2003},
}